Episode 20 focuses on some great prison exploitation films from opposite sides of the earth. 1973's Terminal Island and 1982's Turkey Shoot. They both posit a near future situation where socially undesirable types are shipped off to remote locations to protect the masses from either a murderous blood lust or a revolutionary mindset. In both there is violence, sexism and fantastic action set-pieces. These are not your typical exploitative fare though. Terminal Island is given an interesting spin by director Stephanie Rothman and Turkey Shoot is another in director Brian Trenchard-Smith's long career of outstanding films.
These both are well worth watching, especially if you love totally bizarre additions of things like werewolves, mini-bulldozers and evil villains who are afraid of the dark!